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Pillar and roof span design in stone mines.

Authors
Esterhuizen-GS; Dolinar-DR; Ellenberger-JL
Source
Extracting the science: a century of mining research. Brune JF, ed., Littleton, CO: Society of Mining, Metallurgy, and Exploration, 2010 Jan; :209-224
Link
NIOSHTIC No.
20037776
Abstract
Underground stone mines in the United States use the room and pillar method of mining in relatively flat laying deposits. Roof and rib falls account for 15% of all lost time incidents. This paper presents the result of a study to improve pillar and roof span design methods so that unexpected ground instabilities will be reduced. A pillar design equation and related design guidelines are presented based on the observation of pillar performance at 34 different underground operations. A roof span design procedure is also proposed that systematically addresses the main issues related to roof instability. The guidelines are based on the observation of actual pillar and roof span performance in stone mines in the Eastern and Midwestern United States and therefore only apply to stone mine design within these regions.
Keywords
Accident-prevention; Accident-statistics; Control-technology; Engineering-controls; Ground-stability; Miners; Mine-workers; Mining-industry; Room-and-pillar-mining; Safety-engineering; Safety-measures; Safety-research; Statistical-analysis; Stone-mines; Underground-miners; Underground-mining
Publication Date
20100101
Document Type
Book or book chapter
Editors
Brune-JF
Fiscal Year
2010
NTIS Accession No.
NTIS Price
ISBN No.
9780873353229
NIOSH Division
OMSHR
Priority Area
Mining
Source Name
Extracting the science: a century of mining research
State
PA; CO
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